1. Which three factors should be considered when implementing a Layer 2 protocol in a network? (Choose three.) • the Layer 3 protocol selected • the geographic scope of the network • the PDU defined by the transport layer • the physical layer implementation • he number of hosts to be interconnected 2. Refer to the exhibit. Assuming that the network in the exhibit is converged meaning the routing tables and ARP tables are complete, which MAC address will Host A place in the destination address field of Ethernet frames destined for www.server? • 00-1c-41-ab-c0-00 • 00-0c-85-cf-65-c0 • 00-0c-85-cf-65-c1 • 00-12-3f-32-05-af 3. Which options are properties of contention-based media access for a shared media? (Choose three.) • non-deterministic • less overhead • one station transmits at a time • collisions exist • devices must wait their turn • token passing 4. What is true concerning physical and logical topologies? • The logical topology is always the … [Read more...]
CCNA 1 – Chapter 6
1. Refer to the exhibit. Which network prefix will work with the IP addressing scheme shown in the graphic. • /24 • /16 • /20 • /27 • /25 • /28 2. Which IPv4 subnetted addresses represent valid host addresses? (Choose three.) • 172.16.4.127 /26 • 172.16.4.155 /26 • 172.16.4.193 /26 • 172.16.4.95 /27 • 172.16.4.159 /27 • 172.16.4.207 /27 3. Which statements are true regarding IP addressing? (Choose two.) • NAT translates public addresses to private addresses destined for the Internet. Only one company is allowed to use a specific private network address space. • Private addresses are blocked from public Internet by router. • Network 172.32.0.0 is part of the private address space. • IP address 127.0.0.1 can be used for a host to direct traffic to itself. 4. Which process do routers use to determine the subnet network address based • upon a given IP address and subnet mask? • binary adding • hexadecimal anding • binary … [Read more...]
CCNA 1 – Module 5
1 In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another? **destination network address source network address source MAC address well known port destination address 2 What information is added during encapsulation at OSI Layer 3? source and destination MAC source and destination application protocol source and destination port number **source and destination IP address 3 In a connectionless system, which of the following is correct? The destination is contacted before a packet is sent. **The destination is not contacted before a packet is sent. The destination sends an acknowledgement to the source that indicates the packet was received. The destination sends an acknowledgement to the source that requests the next packet to be sent. 4 Which IP packet field will prevent endless loops? type-of-service identification flags **time-to-live header checksum 5 Which portion of the network layer address does a … [Read more...]
CCNA 1 – Module 4
1 Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two.) The local host is using well-known port numbers to identify the source ports. **A termination request has been sent to 192.135.250.10. Communication with 64.100.173.42 is using HTTP Secure. **The local computer is accepting HTTP requests. 192.168.1.101:1042 is performing the three-way handshake with 128.107.229.50:80. www.ccna4u.info www.ccna4u.tk 2 After a web browser makes a request to a web server that is listening to the standard port, what will be the source port number in the TCP header of the response from the server? 13 53 **80 1024 1728 3 Which information is found in both the TCP and UDP header information? sequencing flow control **acknowledgments source and destination 4 Which is an important characteristic of UDP? acknowledgement of data delivery **minimal delays in data delivery high reliability of data delivery same order data delivery 5 Refer to the … [Read more...]
CCNA 1 – Module 3
1. What is the purpose of resource records in DNS? used by the server to resolve names 2. What are two forms of application layer software? applications syntax 3. What application layer protocol is commonly used to support for file transfers between a client and a server? FTP www.ccna4u.info www.ccna4u.tk 4. What are two characteristics of peer-to-peer networks? decentralized resources resource sharing without a dedicated server 5. Which layer of the OSI model supplies services that allow user to interface with the network? application 6. What are three properties of peer-to-peer applications? acts as both a client and server within the same communication hybrid mode includes a centralized directory of files does not require specialized software 7. What is the role of the OSI application layer? provides the interface between the applications on either end of the network 8. What three protocols operate at the Application layer of the OSI model? DNS, SMTP, POP 9. Which email … [Read more...]
CCNA 1 – Module 2
1 Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.) Network Transport Physical** Data Link** Session 2 What is a primary function of the trailer information added by the data link layer encapsulation? supports error detection** ensures ordered arrival of data provides delivery to correct destination identifies the devices on the local network assists intermediary devices with processing and path selection 3 During the encapsulation process, what occurs at the data link layer? No address is added. The logical address is added. The physical address is added.** The process port number is added. www.ccna4u.info www.ccna4u.tk 4 What device is considered an intermediary device? file server IP phone laptop printer switch** 5 Which layer encapsulates the segment into packets? physical data link** network transport 6 Which statements correctly identify the role of intermediary devices in the network? (Choose three.) determine … [Read more...]
CCNA Exploration 4.0 come back!
CCNA Exploration 4.0 come back! … [Read more...]
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